body{
    background:#faf2cc;
}
#readdiv{
    width: 60%;
    margin: auto;
    margin-top: 60px;
    margin-bottom: 50px;
}
header{
    margin-bottom: 60px;
    text-align: center;
    font-weight: bold;
    font-size: 36px;
}
main{
    margin-top: 10px;
    font-size: 25px;
    font-family: "楷体";
    width:80%;
    margin:10px auto 50px;
}